本来就是个让喜欢数学的小娃have fun的活动。娃真喜欢数学，学学考考就好了. MAA网上有声明

https://maa.org/math-competitions

COMPETITION UPDATES

IMPORTANT ANNOUNCEMENT REGARDING THE AMC 12 A

We are aware that elements of the AMC 12 A competition were leaked. We have been monitoring online channels and have already identified the source of the leak. This specific test site has been disqualified from this competition cycle and banned from participating in the MAA AMC in the future. 

The MAA AMC administration platform has mechanisms in place, utilizing both human resources and artificial intelligence, to identify broad statistical anomalies, as well as anomalies within individual competitors. This will inform the scoring of the competition and aid in disqualifying those found in violation of our policies.

We are committed to the integrity, fairness, and security of these competitions. Going forward, the procedures for distributing the competitions, both domestic and international, will be restructured. 

Thank you for your patience as we continue to investigate these reports and monitor for subsequent incidents.